Extent of map created with itemquerymap

[Roman Meier]

Dear list

I use Mapserver 4.0 as a CGI. I’m able to create a map, zoomed to a selected
shape using itemquerymap. That is exactly what I want and it is working fine.

The URL looks like: 
http://localhost/cgi-bin/mapserv?map=bla.map&qitem=nr&qstring=43&mode=itemquerymap&mapext=shapes&qlayer=Layer3&layers=Layer1+Layer2

For my Javascript-Application to work, I need the extents (minx, maxx, etc.) of
that map too. How can I get these parameters? A similar question has been asked
before, but I couldn’t find an answer. Any ideas?

Thanks in advance.
Roman